Dimmer Packs

Ed Wall

New Member
Apr 7, 2021
Garland, TX
I run Lighting in our church. We have 2 NSI 2408 controlled with a 16 channel board in the sound booth.
We recently replaced most all of the house lights including fixed spot lights with LED lights. Of course you know the problem the resulted: blinking light when dimming - full on is okay and partial dimming is okay but only to a point. Full off does not occur -only almost off.
All new LED bulbs were purchased by office manager looking for price mainly although he did know to purchase only dimmable LED bulbs.
Any suggestions? we know the problem is probably caused by diminished amperage draw and we are about to try adding one regular bulb (not LED) to one circuit to see if that additional amperage helps.


Well-Known Member
Dec 7, 2011
It is worth trying a dummy load (like an incandescent bulb). However, most inexpensive dimmable LEDs aren't made to work on theatrical dimmers. Household dimmers work differently, and they are setup to work that way. ETC has an extensive database of lamps they've tested with their dimmers. You're not using those, but it is a good place to start your search.

As a note, a traditional bulb doesn't fix things (usually) because it draws more amperage, it helps clean up the dimming curve by being a purely resistive load, and dimmers like that.
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Well-Known Member
Sep 18, 2009
Spokane, WA the great "Inland Northwest"
The easiest full fix is likely to get new dimmers for the houselights. The reduced wattage will let you gang circuits 2-4 into one, or use smaller cheaper dimmers. All that assumes your system is DMX and not analog or 'microplex'.

The ETC Foundry 'phase adaptive' 600W dimmer has a nice feature set and price.

Trying several sets of replacement bulbs is a common thought. But you have no guarantee that anything that works in a test, will work on full circuits. Then some will go out and the same ones won't be available. All in all, that's an expensive, labor intensive, and risky move.


Renting to Corporate One Fixture at a Time.
May 28, 2009
Phoenix, Az
Take one LED lamp out and replace it with one of the old ones. One that’s easily changed when it dies.
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